No issues here with 7am reservation for the Hilton (I'm local but a couple of my sisters are attending for the weekend this year and I'm looking forward to having a room to stash cosplay in / relax).

Reading on Facebook it looks like people were bum rushing the housing site this morning as the system was allowing them to book rooms without a priority window. However it appears Fanime has been taking care of the issue and canceling reservations made by people who did so outside their booking window, then fast tracking the waitlist for the people who had their early times filled due to the illegal bookings.

How do we waitlist? I booked one but want to waitlist for another hotel.

I'm wondering this as well. Last year you could select waitlist next to the hotel. If memory serves, it would only allow it once you made a reservation, but I could be wrong. This year I don't see the option at all.